1
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is a first step in mechanism of heterogenous catalysis?

A
Desorption of reaction product from catalyst surface
B
Adsorption of reactant molecules on catalyst
C
Occurrence of chemical reaction on catalyst surface to form an intermediate
D
Diffusion of reactants towards catalyst surface
2
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following carboxylic acids has lowest boiling point?

A
Butyric acid
B
Propionic acid
C
Acetic acid
D
Valeric acid
3
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

For the reaction, $$2 \mathrm{~A}+\mathrm{B} \rightarrow 2 \mathrm{C}$$, rate of disappearance of $$\mathrm{A}$$ is $$0.076 \mathrm{~mol} \mathrm{~s}^{-1}$$. What is the rate of disappearance of $$\mathrm{B}$$ ?

A
$$0.076 \mathrm{~mol} \mathrm{~s}^{-1}$$
B
$$0.038 \mathrm{~mol} \mathrm{~s}^{-1}$$
C
$$0.019 \mathrm{~mol} \mathrm{~s}^{-1}$$
D
$$0.095 \mathrm{~mol} \mathrm{~s}^{-1}$$
4
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of following is an example of cross-linked polymers?

A
PVC
B
Acetate rayon
C
High density polyethylene
D
Melamine
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